DNS Split / IP DNS Question
Posted on 2009-02-16
I am trying to achieve a method of using a Cisco router as a DNS Server to push requests for the internal domain (i.e. abccompany.local) to the local DNS server(s), and all other requests to Public DNS Servers.
The situation currently is that home workers connect using Cisco 800 Series Routers with IPSec VPN to the main office. This works just fine and I have enabled our internal DNS Servers inside the DHCP scope on the home based users routers.
ip dhcp pool pool1
network 192.168.104.0 255.255.255.0
dns-server 172.16.0.242 172.16.0.245
This is working just fine, however this method is pushing all DNS requests to the internal Servers.
I know how to configure the router as a DNS Server, but not how to achieve the above? I read up on Split DNS but cant seem to apply what I'm thinking above or by other means, so I guess I'm misunderstanding the doc!
Supporting info on this around the internet seems to be really limited. All I can find is either using the router as a DNS Server, or pushing out Public/Private DNS Server addresses through DHCP.
Any example configs and/or help would be greatly appreciated! I don't even necessarily need to go down the Split DNS route, just some way of achieving the above.